"First test using duals on a tractor in 1940 and the first year the new Charley Adams test car was used." Side view of a Ford-Ferguson System 9N tractor towing the test car and another tractor, which serves as a load unit. The Adams test car could...

Standing on wooden scaffolding at the corner of a partially constructed brick wall, two men watch as two others kneel and apply a rectangular stone face onto the brick. One level above them, two men crank handles on opposite sides of the wooden...